The consortia led by Louis Berger have won two projects of works supervision on the National Highway 9, on both sides of the border Congo-Cameroon. The works specifically concern the road Ketta-Biessi-Cameroun border (311 km), in Congo, and on the road Djoum-Mintom-Congo Border (200 km), in Cameroun.

Under both projects, the consortia led by Louis Berger are in charge of the supervision of the paving works and of the implementation of minor improvements works, including the related facilities. The main services are as follows: definition of the work in progress, managing the execution of works contracts, quality control, scheduling, construction monitoring and coordination and support of reception operations.